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19/06/2015, 11:30In 1875 the German physician and physicist Hermann von Helmholt said with humor that: "Now, it is not too much to say that if an optician wanted to sell me an instrument (the eye) which had all these defects, I should think myself quite justified in blaming his carelessness in the strongest terms and giving him back his instrument.". Despite this rebuke from 130 year ago, we can say that the...Go to contribution page
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